Numerical Modelling and Simulation of Road Crash Tests with the use of Advanced CAD/CAE Systems / Modelowanie Numeryczne I Symulacja Drogowych Testów Zderzeniowych Z Wykorzystaniem Zaawansowanych Systemów CAD/CAE

Niezgoda, T.; Barnat, W.; Dziewulski, Paweł; Kiczko, A.

doi:10.2478/jok-2013-0041

Cited by 10 publications

(7 citation statements)

References 2 publications

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“…Previous studies dealing with friction properties and/or their impact on the obtained results are subject to two distinct limitations [ 18 , 23 , 25 , 49 , 50 , 51 , 52 , 53 ]. First, the friction data are not consistent, and significantly different values of friction coefficients are assumed despite the simulation of similar problems.…”

Section: Methodology Of Numerical Simulationsmentioning

confidence: 99%

“…The pole was discretized using fully integrated Lagrangian Belytschko-Tsay (BT) shell elements. For the vehicle, the widely used and deeply validated Suzuki Geo Metro FE model was adopted [ 20 , 25 , 26 , 27 ] as modified by the Department of Mechanics of Materials and Structure, Gdańsk University of Technology, Poland [ 26 ]. The model consists of 14,709 shell elements and 820 solids.…”

Section: Problem Descriptionmentioning

confidence: 99%

“…Ref. [ 25 ] presented a methodology for validating and verifying numerical models using uniaxial tensile test data and the results of frontal impact tests using the sledge stand. Ref.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Simulation of Vehicle–Lighting Pole Crash Tests: Parametric Study of Factors Influencing Predicted Occupant Safety Levels

Baranowski

Damaziak

2021

Materials

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In this paper, numerical simulations of the EN 12767 test procedure for a vehicle–lighting pole crash are presented. A representative soil–vehicle–lighting pole model is first developed. The Geo Metro vehicle model is used, and significant attention is given to representing the soil and its interaction with the traffic pole. Soil is represented using smoothed particle hydrodynamics (SPH) coupled with finite elements (FEs). A parametric study is carried out to investigate the key factors influencing the outcomes and consequently the estimation of the occupant safety levels during crash scenario described in EN 12767. First, a sensitivity study of lighting pole mesh is conducted As a result, the optimal mesh size is used for further studies regarding physical parameters such as soil properties and friction coefficient in vehicle–pole interfaces. Friction and mesh size are found to have a considerable influence on the acceleration severity index (ASI), theoretical head impact velocity (THIV), post-impact velocity and vehicle behavior during the lighting pole crash scenario.

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Section: Methodology Of Numerical Simulationsmentioning

confidence: 99%

Section: Problem Descriptionmentioning

confidence: 99%

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Numerical Simulation of Vehicle–Lighting Pole Crash Tests: Parametric Study of Factors Influencing Predicted Occupant Safety Levels

Baranowski

Damaziak

2021

Materials

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“…The use of computeraided software in the design of roadside safety systems and crash tests has been suggested as a result of the studies. [9][10][11] In addition to the studies mentioned above, there are many studies that have been done for the design and analysis of a security system or a part of it by using FEs such as new generation L1 containment level guardrail, 12 cable barrier system, 13 mobile anti-terror barrier, 14 and bollard systems. 15 It has been seen that the common FE program used in road restraint system (RRS) research is LS-DYNA.…”

Section: Introductionmentioning

confidence: 99%

Head-on and angular impact-based investigation of mechanical behavior of guardrail post types with finite element analysis

Özcanan

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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The geometric sections of guardrail systems that provide roadside safety are important in terms of their safety and structural performance. Guardrail systems generally consist of posts and beam. One of the critical components that affect the performance of steel guardrail systems is the post. Many different types of posts are used in practice. In this sense, the mechanical performance of the most commonly used S-C-I-Z-rectangular-circular post types in this study was investigated and compared on the basis of their failure performances. For this, the finite element (FE) model of the pendulum system, which was previously validated with empirical data, was used. In the FE analysis, the mechanical performance of posts embedded in soil and fixed on top of the ground was investigated by the pendulum system in head-on and angular impact situations. As a result of the FE analyses; the mechanical performances were different for head-on and angular impact situations. However, since circular and rectangular posts show the best performance in case of angular impact, and considering in terms of guardrail systems, angular impact situations are a matter of concern, it has been understood that the use of closed-section posts as circular and rectangular in guardrail systems will provide safety and economic advantages.

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“…Borkowski et al 20 compared the TB11 test with the real crash test and LS-DYNA FE simulation according to some criteria within the scope of EN 1317 standard and emphasized that the LS-DYNA FE model can be used. Niezgoda et al 21 in their studies on the use of computer-assisted software in modeling and simulation of crash tests, it was recommended that numerical and experimental tests largely confirm each other, and the use of computer-aided software in crash tests would be convenient. Pachocki and Wilde 22 stated in their study that the H2W5-B type steel barrier was successfully designed and tested with LS-DYNA non-linear FE program.…”

Section: Introductionmentioning

confidence: 99%

Criteria inadequacy of the vehicles used for the calculation of safety parameters in the EN1317-TB11 test

Özcanan

Ozcan

2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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Road restraint systems-RRS are passive safety designs installed on roadsides to ensure the safety of errant vehicle passengers as well as pedestrians. The adequacy of these systems is assessed through full-scale vehicle crash testing for which evaluation criteria are determined by standards such as EN1317. Recently the same RRS is crash tested two times with two different 900 kg passenger cars and test results varied significantly. After a failed crash test instead of modifying the barrier test vehicle was replaced and the same test was repeated. It was surprising to see that the failed RRS this time satisfied the EN1317 evaluation criteria. Despite the use of the same mass vehicle in the crash tests, the different results obtained were a source of motivation for investigating the inadequacy of EN1317. In this study, the adequacy of the 900 kg vehicle criteria used in the determination of the safety parameters in the EN1317-TB11 test was investigated by creating validated finite element-FE models. After the FE analysis it was concluded that test vehicle properties, such as vehicle mass and velocity provided in EN1317 are deemed to be insufficient and more explicit vehicle selection parameters, given in the study, are needed to provide safer and more uniform crash testing results.

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Numerical Modelling and Simulation of Road Crash Tests with the use of Advanced CAD/CAE Systems / Modelowanie Numeryczne I Symulacja Drogowych Testów Zderzeniowych Z Wykorzystaniem Zaawansowanych Systemów CAD/CAE

Cited by 10 publications

References 2 publications

Numerical Simulation of Vehicle–Lighting Pole Crash Tests: Parametric Study of Factors Influencing Predicted Occupant Safety Levels

Numerical Simulation of Vehicle–Lighting Pole Crash Tests: Parametric Study of Factors Influencing Predicted Occupant Safety Levels

Head-on and angular impact-based investigation of mechanical behavior of guardrail post types with finite element analysis

Criteria inadequacy of the vehicles used for the calculation of safety parameters in the EN1317-TB11 test

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